TY  - JOUR
AU  - Chavarria-Krauser, A.
TI  - Quantification of curvature production in cylindrical organs, such as roots and hypocotyls
JO  - The new phytologist
VL  - 0
SN  - 0028-646X
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - PreJuSER-51172
SP  - 633 - 641
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - Differential growth curvature rate (DGCR), defined as the spatial derivative of the tropic speed, was derived as a measure of curvature production in cylindrical organs. Its relation to usual concepts, such as curvature (kappa), rate of curvature (dkappa/dt) and differential growth profiles, was determined. A root gravitropism model, testing the hypothesis of one and two motors, exemplified its capabilities.DGCR was derived using cylindrical geometry and its meaning was obtained through a curvature conservation equation. The root gravitropism model was solved using a discrete difference method on a computer.DGCR described curvature production independently of growth, and was superior to dkappa/dt, which underestimated production. Moreover, DGCR profiles were able to differ between one and two motors, while profiles of kappa and dkappa/dt were not. The choice of the measure of curvature production has a large impact on experimental results, in particular when spatial and temporal patterns of differential growth need to be determined. DGCR was shown to fulfill the accuracy needed in the quantification of curvature production and should thus serve as a helpful tool for measurements.
KW  - Arabidopsis: anatomy & histology
KW  - Arabidopsis: growth & development
KW  - Arabidopsis: physiology
KW  - Gravitropism: physiology
KW  - Hypocotyl: anatomy & histology
KW  - Hypocotyl: growth & development
KW  - Models, Biological
KW  - Plant Roots: anatomy & histology
KW  - Plant Roots: growth & development
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:16866964
UR  - <Go to ISI:>//WOS:000239010200016
DO  - DOI:10.1111/j.1469-8137.2006.01770.x
UR  - https://juser.fz-juelich.de/record/51172
ER  -